viruses Review Bats and Coronaviruses Arinjay Banerjee 1,†, Kirsten Kulcsar 2,†, Vikram Misra 3, Matthew Frieman 2 and Karen Mossman 1,* 1 Department of Pathology and Molecular Medicine, Michael DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON L8S 4L8, Canada;